The Lamb is a small tower located on the northeast corner of Sheep Rock. Two climbs that I know of climb this small tower, Sheepish Grin and Sheep in Wolf's Clothing, both were put up by the late Charlie Fowler.
Getting There
Follow the directions to get to Sheep Rock: "Park in a small pullout on the northwest side of the Tower of Babel. A wash, that can be seen about 100 meters west of the car, runs up towards the Sheep. Follow it to right under the formation, then walk up the cone to the base."